The pass rate at a school rose from 80% to 92%, with the same number of students appearing both years. By what percentage did the number of students who failed fall?

Explanation

1. 01

   Failures fell from 20% to 8% of the students.

2. 02

   Fall = 12 percentage points; as a percent of the old failures: $\frac{12}{20} \times 100 = 60\%$.